Version 1.0.0

Version 1.0.0

First stable release of the Satellite Data Viewer - an interactive web application for exploring and downloading satellite imagery from Microsoft Planetary Computer.

Features

• Multi-Collection Support - Sentinel-2 L2A, Landsat C2 L2, Sentinel-1 RTC, MODIS 13Q1, and Copernicus DEM
• Interactive Visualization - Real-time COG tile rendering with adjustable band selection
• Dynamic Legends - Color ramps with actual data values for interpretation
• Measurement Tools - Distance (km/miles) and area (km²/acres/hectares) with geodesic accuracy
• GeoTIFF Downloads - Download full-resolution satellite tiles with Cloudflare Turnstile protection
• Metadata Viewer - Detailed STAC metadata display for each tile
• Cloud Filtering - Filter optical imagery by cloud cover percentage
• Multi-Select - Display and compare multiple tiles simultaneously

Visualization Controls

• Adjustable elevation ranges for DEM visualization
• Adjustable thermal ranges for Landsat thermal band
• Band selection (TCI, NIR, SWIR, Red Edge, etc.)
• Multiple base layers (street, satellite, none)
• Show/hide image boundaries
• Click-to-search anywhere on the map

Technical Stack

• React 19
• Vite 7.2.4
• Leaflet with OpenStreetMap and Esri base layers
• Turf.js for geodesic calculations
• Axios for HTTP requests
• Microsoft Planetary Computer STAC API and TiTiler

Architecture

Hybrid client-server architecture with client-side viewing and optional serverless backend for downloads. Config-driven design with centralized collection metadata for easy maintenance.

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Live Demo: https://kongstad.github.io/sat-data-viewer

Backend: https://github.com/Kongstad/sat-data-viewer-backend

Satellite Data Viewer v0.9.0 (Beta)

Public preview release with full feature set and automated testing. Ready for user feedback and testing.

Features

Multi-Collection Support

• Sentinel-2 L2A (Optical imagery with 4 band options)
• Landsat C2 L2 (Multispectral with thermal band)
• Sentinel-1 RTC (SAR radar imagery)
• MODIS 13Q1 (Vegetation indices)
• Copernicus DEM (Global elevation data)

Interactive Tools

• Real-time COG tile rendering via Microsoft Planetary Computer
• Geodesic distance and area measurements
• Dynamic legends with adjustable visualization ranges
• Multi-band selection and comparison
• Click-to-search with bounding box drawing

Technical Implementation

• React 19 + Vite build system
• Leaflet mapping with custom controls
• Turf.js for geospatial calculations
• Config-driven architecture for easy extensibility
• 24 automated tests with Vitest + React Testing Library
• GitHub Actions CI/CD with automatic deployment

Live Demo: https://kongstad.github.io/sat-data-viewer/

Status

This is a beta release. All core features are implemented and tested, but the application has not been validated at scale. Feedback welcome!